National Ozone Unit representatives organized, on September 21, a Clean–up activity, in different areas of the Peza National Park. The activity combined the cleaning, removal and lifting of garbage, in the most populated area of the Park.

The NOU representatives together with youth activists, distributed to the passers-by and to the visitors of the park, leaflets prepared by the NOU, with detailed information regarding the International Day for the Preservation of the Ozone Layer, Montreal Protocol on Substances that Deplete the Ozone layer, main causes of Ozone layer depletion and the importance of the Ozone Layer protection. In order to boost awareness, the Ozone Day 2019 Poster was unfolded on the main field of the Park.